Hydrometer



W. E. BIEBOW.

HYDROMETER.

APPLICATION FILED FEB. 2, 1921.

Patented Jan.31,1922.

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WILLIAM EDWARD BIEBOW, or LOS ANGELES, CALIFORNIA.

V HYDROMETER.

To all witom it may concern: 1

Be it known that I, WILLIAM EDWARD BIEBOW, a citizen of the United States, and

' expensive to manufacture, which is adapted and protected to withstand the rough usage incident toits employment in garages and with automobiles, which is a non-conductor,

and which will not be impaired or rendered inaccurate by virtue of variations in temperature, and which is always available and effective to accurately and easily test th storage batteries of automobiles.

Other' objects and advantages reside in l the certain novel. featuresof the construction, arrangement and combination of'parts, which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to, the accompanying drawings forming a. part of this specification, and in which:

Figure 1 is a side elevational view of the invention, r

Figure 2 is a longitudinal sectional view therethrough,

Figure 3 is a transversesectional view on the line 3'3,of Figure 2,

Figure 1 is a similar view on the line 4-4 of Figure 2,

Figure 5 is a similar view on the line of Figure 2. 4

Referring to the drawings wherein for the sake of illustration is shown a preferred embodiment of the invention, the numeral 10'designates a tubular receptacle of transparent material preferably of high test boiler, tubing Scotch glass; The receptacle 10 is'flarltptsd to operatively receive a hy- Specification of Letters Patent.

ments or cushioningplates 30 and 31.

Patented Jan. 31 1922.

Application filed February 2, 1921. Serial No. 441,885.

drometer 11 having an elongated and graduated stem 12 which is s'lidably r'eoei'ved in the guide opening 13 of a guide lat, which as clearly shown in Figure 4, embodies a central guide block 15 and spider arms 16 connecting the "block to the tubular rece tacle'. e e

lugs 20 and 21 close the opposite ends of the tubular receptacle and are constituted of soft rubber or similar material. Each'plug is provided with an annular flange, designated at 22 and-23, respectively, and which abut the adjacent end of the tubular receptacle. Each plug is further provided wlth an axial bore indicated at24= and 25 respectively.v A set of spaced triangular plates of fibre is arranged adj acent each plug, these sets'including plates 26, 27, 28 and 29, and the plate 27 of one set and the plate 29 of the other set bearing against the adjacent plug. Between the plates 26 'and27 of one set a triangular plate 30 of elastic or cushioning rubber is arranged, anda similar plate-designated at 31' is arrangedbetween the plates 28 and 29. These plates 30 and 31 project or extend beyond the sets of plates and the other elements of the instrument are shown in the drawing. The plates 26, 27, and 30 andthe plates 28, 29 and 31' are provided with a plurality of alined openings and with axial bores communicating' with the axial bores of the adjacent plug. Rods 33 of fibre extend between and through the alined openings of the plates and parallel and adjacent the exterior of the tubular'receptacle. Preferably there are three of these rods and'they are arranged at the corners of the triangular plates as'cl'early shown in Figures 3 and ,5 The ends of the rods are threaded and receive fibre nuts 34 which abut the outermost plate oneach set and serve tomaintain the parts assembledand to tension the cushioning ele- Bushings 35 and; 36 having axial ducts 37 and 38 extending therethrough and terminating in branches 37 and 38 are insertedin the axial bores as clearly shown n g r an are pte o c n ec ion to a bulb 40 and a flexiblehose .41, By 7 viding the exami e as with the 38' the possibility of the base or lower end of the hydrometer interfering with the inlet or dischar e of the liquid to be tested is precluded %'or the point or area of contact of this lower end is usually entirely accommodated by the space between the branches so that neither-branch is in any way obstructed, but in any event this point or area of contact is not sutficient to extend across both branches.

In practice, the hydrometer may be utilized in garages and similar places for test ing the storage batteries of automobiles, and

it is well adapted to withstand the stresses incident to this hard usage. In the first place, the cushioning elements 33. which are tensioned by taking up the nuts 34: on the fibre rods are always exertinga cushioning actionand tend to take up or absorb the shocks incident to impacts or the like, and thus to relieve the hydrometer 11 or the other delicate parts of the instrument from the action of deleterious'stresses.

The fibre rods transmit the cushioning action of the plates 30 and 31 and further they protect the tubular receptacle for they lie at regular intervals .about the exterior thereof. Finallyv the plates being of triangular shape, permit of the hydrometer being placed on a smooth surface with safety as it prevents rolling of the hydrometer and precludes to a large, extent falling and damaging thereof.

It is to be noted however that with this construction, the hydrometer is well adapted to withstand the action of falls and the like, for thecushioning elements project beyond theother. plates and are most likelyto receive the force of impact and even should they not receive this force of 'in1pac-t,'the

fibre rods or the fibre plates will receive it, and these are so organized with the cushioning elements that the stresses set up therein are-absorbed or taken up by these cushioning elements. i

If desired the elements of the instrument with the exception of the transparent receptacle, the guide, and the cushioning elements, may be made of hard rubber, whereby the instrument is absolutely acid-proof. The guide however is preferably constructed of ivory, and does not expand and contract.

I claim:

1. In an instrument of the character described, a tubular receptacle of transparent material, a hydrometer operatively arranged therein, a guidefor said hydrometer within said receptacle, a plug of hard rubber closing each end of said receptacle, each plug having an annular flangeabutting the end of the tube and being provided with an axial bore, a set of spaced triangular plates of fibre adjacent each plate, one plate of each I set bearing against the adjacent plug, a triangular plate.- of cushioning rubber interposed between the spaced plates of each set,

said spaced plates and said plates of rubber .ends of the rods and abutting the outermost of said plates, and bushings inserted in said axial bores and adapted for connection with a bulb and a flexible hose respectively. i

2. In an. instrument of the character described, a tubular receptacle of transparent material, a hydrometer operatively arranged therein, a plug of hard rubber closing each end of said receptacle, each plug having an annular flange abutting the end of the tube and being provided with an axial bore, a, set of spaced triangular plates of fibre adjacent each plate, one plate of each set bearmg against the adjacent plug, a triangular plate of cushioning rubber interposed between the spaced plates of each set, said spaced plates and said plates of rubber being provided with alined openings, and with axial bores communicating with the axial bores of said plug, a plurality of rodsv extending between said plates and through the openings there.- ot, nuts threaded upon the end of'the rod and abutting the outermost of said plates, and bushings inserted in said axial bores and adapted for connection with a bulb and a flexible hose respectively.

8. In an instrument of the character described, a tubular receptacle'ot transparent material, a hydrometeroperatively arranged therein, plugs for the end of said tubular receptacle, each plug having an annular flange abutting the end of the tube, a set of spaced plates adjacent each plug, a plate of'cushioning material interposed between the spaced plates of each set and projecting beyond the same, said spaced plates and said plates of rubber being provided with alined openings, a plurality ol rods extending between said plates and through the openings thereof, and nuts threaded 0n the ends of the rods" and abutting the outermost of said plates.

l. In an instrument of the character described, a receptacle of transparent material, a hydrometer operatively arranged therein, plugs for the ends of said receptacle, a set of spaced plates of fibre adj acent each plug, a plate of cushioning material interposedbetween the spaced plates of each set and projecting beyond the same, and a plurality of rods extending between and secured to said plates, I

5. In an instrument of the character described, a tubular-receptacleof transparent material, a hydrometer operatively arranged therein, means for closing the ends of the tubularreceptacle, a set'of plates adjacent each of said end closing means, a cushioning element arranged between the plates of each spaced plates adjacent each end of the reset, and rods extending between and secured ceptacle, a cushioning element between said to said plates and said cushioning elements, spaced plates, and fibre rods extending be- 10 all as and for the purpose set forth. tween and secured to said spaced plates and 5 6. In an instrument of the character speeisaid cushioning elements.

fied, a receptacle of transparent material, a V hydrometer operatively arranged therein, WILLIAM EDWARD BIEBOW. 

